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Finding the Fourth Proportional to 100.97, 151.23 and 60.43

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Solution

The fourth proportional to 100.97, 151.23 and 60.43 is: 90.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.97 : 151.23 = 60.43 : x
  2. Step 2: Convert to fraction form
    100.97/151.23 = 60.43/x
  3. Step 3: Cross multiply
    100.97x = 151.23 × 60.43
  4. Step 4: Simplify right side
    100.97x = 9,138.83
  5. Step 5: Solve for x
    x = 9,138.83/100.97
  6. Step 6: Final answer
    x = 90.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.